Hibiscus are one of the very best flowering shrubs and Ardens Blue Rose of Sharon is no exception. These sterile hybrids are profuse bloomers. Large, double, blue flowers with a dark red eye fade to lavender. Extremely long blooming from July to autumn frost. This deciduous shrub may grow to 10-12' tall by 8-10' wide, and is hardy to zones 5-9. Can be pruned in late winter. Very versatile, can grow in most soils and lighting conditions, but flowers best in full sun.